CN115538788A - Modular construction method for U-shaped wall reinforcement cage - Google Patents

Abstract

The invention discloses a U-shaped wall reinforcement cage modular construction method, which comprises the following steps: 1) Binding steel bars on a prefabricated tool to form a U-shaped wall steel reinforcement cage; 2) Hoisting the reinforcement cage to the site reserved reinforcement by using a hoisting tool; 3) Connecting the vertical steel bars at the bottom of the steel reinforcement cage with the on-site reserved steel bars through taper sleeves; the device comprises a prefabricated positioning base and a steel bar framework; the prefabricated positioning base comprises a channel steel frame, a plurality of positioning steel sleeves for inserting and fixing vertical steel bars are arranged on the channel steel frame, and the steel bar framework comprises a vertical framework vertically arranged on the prefabricated positioning base; the horizontal framework is vertically arranged on the vertical framework. The construction method can prefabricate the whole wall body into the reinforcement cage module, transfer the work of reinforcement binding to the ground for prefabrication in advance, realize the connection with the on-site reserved reinforcement through the taper sleeve, and greatly improve the construction efficiency; simultaneously, through a specially-made prefabricated tool, the manufactured reinforcement cage can be guaranteed to be accurately butted with the reserved reinforcement on site.

Description

Modular construction method for U-shaped wall reinforcement cage

Technical Field

The invention relates to the technical field of building construction, in particular to a modularized construction method for a U-shaped wall reinforcement cage.

Background

'Hualong I' is a pressurized water reactor nuclear motor which is designed by adopting the international highest safety standard and completely meets the technical indexes of third-generation nuclear power, namely million kilowatts. In the great design improvement of Hua Long I, the earthquake-resistant design benchmark is improved to 0.3g acceleration, so that the reinforcing steel bar quantity of the Hua Long I pile type nuclear power station reaches 10 ten thousand tons, the reinforcing steel bar quantity is 4 times of that of an M310 pile type (a second-generation nuclear power station), the large-diameter reinforcing steel bars with the diameters of 32mm and 40mm are commonly adopted for the vertical reinforcing steel bars of the wall body, the reinforcing steel bars are dense, the reinforcing steel bar construction efficiency is low, the construction difficulty is high, the construction period is long, and the labor intensity and the cost are high.

At present, the traditional mode of the steel bar engineering adopts field manual operation to bind steel bars, and has the following defects:

(1) The on-site operation amount is large, the steel bar binding efficiency is low, the occupied time in civil construction is long, a large amount of manpower, machinery and other resources are required to be input, and the construction mode is not in accordance with the modern, mechanical and modular construction mode at present; (2) The wall body steel bars have large diameter, large layer height, long size and heavy weight, and the difficulty and safety risk of binding are higher, especially when working at high altitude; (3) A large amount of temporary storage yards are required to be arranged on a construction site to stack reinforcing steel bars, and more construction waste is generated in the reinforcing steel bar binding process, so that the difficulty in site safety and civilized construction control is high.

Although some reinforcing mesh sheet construction methods appear in the industry, the method is mainly used for grouting piles or bridge piers of bridges, single-sheet construction is adopted, the efficiency is low, the reinforcing mesh sheets are connected through lap joints or welded joints, the construction is not suitable for mechanical connection of large-diameter reinforcing steel bars, and the deformation is prevented by spot welding reinforcement between the reinforcing steel bars; the construction can be carried out in one wall body at a time, and the modular construction effect is not obvious. And the reinforcement cage module of current preparation is difficult to guarantee the ligature precision of reinforcing bar, leads to easily and the unable butt joint of on-the-spot reservation reinforcing bar to influence the construction progress.

In view of this, the present application is specifically made.

Disclosure of Invention

The invention aims to solve the technical problems that the existing construction method for binding the reinforcing mesh and the traditional reinforcing steel bars is low in efficiency, the connection between the reinforcing steel bars is difficult to accurately butt joint, the mesh is easy to deform and the like, and aims to provide a modular construction method for a U-shaped wall reinforcing cage, which can be used for prefabricating a whole wall into a reinforcing cage module, transferring the work of binding the reinforcing steel bars to the ground for prefabricating in advance, and then realizing the connection with the on-site reserved reinforcing steel bars through a mechanical joint, thereby greatly improving the construction efficiency; meanwhile, the manufactured reinforcement cage can be ensured to be accurately butted with the reserved reinforcement on site through a specially-made prefabricated tool.

The invention is realized by the following technical scheme:

a U-shaped wall reinforcement cage modular construction method comprises the following steps:

1) Binding the vertical steel bars and the transverse steel bars on a prefabricating tool to form a U-shaped wall body steel reinforcement cage;

2) Hoisting the U-shaped wall reinforcement cage to the site reserved reinforcement by using a hoisting tool;

3) Connecting the vertical steel bars at the bottom of the U-shaped wall steel reinforcement cage with the on-site reserved steel bars through taper sleeves;

the prefabricating tool comprises a prefabricating positioning base and a steel reinforcement framework; the prefabricated positioning base comprises a channel steel frame, the channel steel frame is of a horizontally arranged U-shaped structure, a plurality of positioning steel sleeves for inserting and fixing the lower ends of the vertical steel bars are arranged on the channel steel frame, and the distribution positions of the positioning steel sleeves are matched with the distribution positions of the vertical steel bars in the wall body steel bar design structure; the steel bar framework comprises a vertical framework and a transverse framework; the vertical frameworks are sequentially and vertically arranged on the prefabricated positioning base along the U-shaped structure; the horizontal framework is sequentially vertically arranged on the vertical framework along the vertical direction.

When the prefabricated tool used in the construction method is used for preparing the reinforcement cage module, the bottom of the vertical steel bar is inserted into the positioning steel sleeve in the prefabricated positioning base, the steel bar is ensured to be in a vertical state, the transverse steel bar is bound in sequence, the intersecting part of the vertical steel bar and the transverse steel bar is bound firmly by adopting the binding wire, the contact parts of the vertical steel bar and the transverse steel bar, the vertical skeleton and the transverse skeleton are bound firmly by adopting the binding wire, the whole body of the wall reinforcement cage is formed, and the reinforcement cage module is prefabricated. According to the invention, the steel bar is accurately positioned and the position of the steel bar is fixed by positioning the steel pipe sleeve, the positioning of the vertical steel bar can be rapidly realized, the preparation efficiency of the steel bar cage module is improved, meanwhile, the bottom of the steel bar cage can be ensured to be accurately butted with the steel bar joint reserved on site, and the prefabrication precision and quality of the prefabricated steel bar cage are ensured.

After the U-shaped wall steel reinforcement cage module is prefabricated on the ground, the upper end of a hoisting tool is installed on a lifting hook of hoisting machinery, then the upper end of the U-shaped wall steel reinforcement cage module is connected with the hoisting tool, the U-shaped wall steel reinforcement cage module is hoisted to the site wall reserved steel reinforcement position by the hoisting machinery, a prefabricated positioning base is removed, and the U-shaped wall steel reinforcement cage module is connected with the site wall reserved vertical steel reinforcement and horizontal steel reinforcement through a taper sleeve locking mechanical joint. The hoisting tool is used as a link for connecting the reinforcement cage and the hoisting mechanical hook, on one hand, the hoisting tool is used for leveling the reinforcement cage module of the eccentric component, on the other hand, stress points of the reinforcement cage module are increased, so that the integral stress of the reinforcement cage module is ensured to be uniform, and the deformation of the reinforcement cage in the hoisting process is avoided. The taper sleeve is adopted to realize the connection between the reinforcing steel bars, the taper thread on the inner wall of the taper sleeve can bear two acting forces of tension and compression, and the taper sleeve has the characteristics of self-locking property and good sealing performance.

Furthermore, a lifting lug is installed at the upper end of the vertical framework, a connecting lifting lug corresponding to the lifting lug at the top of the vertical framework is also arranged on the bottom surface of the hoisting tool, and the lifting lug is connected with the connecting lifting lug through a steel wire rope. The steel reinforcement cage and the hoisting tool are connected through the lifting lugs, the connecting lifting lugs and the steel wire ropes, so that the steel reinforcement cage and the hoisting tool can be conveniently and quickly connected and detached.

Specifically, the top surface of the hoisting tool is also provided with a lifting hook lifting lug, and the lifting hook lifting lug is also connected with a lifting hook of the hoisting machine through a steel wire rope.

Further, still including setting up the fluting locating plate at prefabricated skeleton wall body precast elevation department, offer the location notch that is used for fixed vertical reinforcement upper end along length direction in proper order on the side of fluting locating plate, the position of location notch is located directly over the location steel casing pipe and one-to-one. The invention is also provided with a slotted positioning plate, and when the reinforcement cage module is prepared, the top of the vertical reinforcement is clamped in the positioning notch of the slotted positioning plate, so that the verticality of the vertical reinforcement is further ensured; meanwhile, for the wall body needing multi-layer construction, the slotting positioning plate at the top of the first layer of wall body steel reinforcement cage is used as a positioning and reinforcing device when the bottom steel reinforcements of the next layer of wall body steel reinforcement cage are butted, so that the accurate positioning of the multi-layer steel reinforcement cage wall body connection is ensured. According to the invention, the vertical steel bars of the wall body and the vertical steel bars of the prefabricated steel reinforcement cage are reserved on site and accurately positioned through the prefabricated positioning base and the slotting positioning plate, and the smooth butt joint of the upper and lower vertical steel bars at the later stage is ensured.

Furthermore, the number of the slotting positioning plates is two, the two slotting positioning plates are respectively arranged and welded on two sides of the prefabricated framework, and the two slotting positioning plates are connected through lacing bars so as to ensure that the positions of the positioning notches on the two sides of the prefabricated framework are aligned with each other and located on a straight line.

Further, it chooses the ear to have set up a plurality of perpendicularly in proper order along the direction of height on the vertical skeleton, choose the ear also perpendicular with horizontal skeleton, vertical reinforcing bar, horizontal reinforcing bar and the contact part who chooses the ear adopt the steel wire to ligature for supplementary fixed vertical reinforcing bar and horizontal reinforcing bar.

Furthermore, the length of the positioning steel sleeve is 45-55 mm, preferably 50mm, and the diameter of the positioning steel sleeve is slightly larger than that of the vertical steel bar, so that the insertion of the vertical steel bar and the fixation of the vertical steel bar in the positioning steel sleeve are ensured.

Furthermore, the prefabricated positioning base is made of channel steel Q235B 10, the vertical framework is made of I-shaped steel, the transverse framework and the cantilever lugs are made of channel steel, and the slotting positioning plate is made of 15-16 mm steel plates. The prefabricated tool disclosed by the invention has the advantages of good integrity, high strength and rigidity, difficulty in deformation, good supporting effect on the reinforcement cage, and capability of avoiding deformation of the reinforcement cage during preparation or field installation.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. according to the modular construction method for the U-shaped wall reinforcement cage, provided by the embodiment of the invention, the whole wall body is prefabricated into the reinforcement cage module, the hoisting is completed through the vertical transportation equipment, and then the connection with the on-site reserved reinforcement is realized through the mechanical joint, so that the construction efficiency is greatly improved;

2. according to the U-shaped wall reinforcement cage modular construction method provided by the embodiment of the invention, the modular prefabrication of the U-shaped wall reinforcement cage is realized, the reinforcement binding work is transferred to the ground from the site and prefabricated in advance, the safety risk and the construction difficulty are reduced, and the reinforcement binding efficiency is improved by more than 30%; the actual time for binding the reinforcing steel bars and installing the embedded parts is not counted in the field construction time, the reinforcing steel bar binding work is removed from the critical path, the construction logic is changed from the traditional sequential construction into the parallel construction, the construction period is greatly shortened, the construction waste and the high-altitude operation amount generated by the traditional field reinforcing steel bar binding are effectively reduced, and the field safe and civilized construction is improved;

3. according to the modularized construction method for the U-shaped wall steel reinforcement cage, the prefabricated tool can be used for accurately positioning the vertical steel reinforcements of the wall body and the prefabricated steel reinforcement cage on site through the prefabricated positioning base and the grooved positioning plate, the steel reinforcement modules can be manufactured in a standardized mode, the manufacturing error is small, the bottom of the steel reinforcement cage can be guaranteed to be accurately butted with the steel reinforcement joint reserved on site, and the vertical steel reinforcements of the upper layer and the lower layer can be guaranteed to be smoothly butted in the later period;

4. according to the U-shaped wall reinforcement cage modular construction method provided by the embodiment of the invention, the reinforcement cage is good in integrity, the prefabricated framework can play a good supporting role on the reinforcement cage, and the reinforcement cage is prevented from deforming during preparation or field installation.

5. According to the modular construction method for the U-shaped wall steel reinforcement cage, the taper sleeve is adopted to realize connection between steel reinforcements, the taper thread on the inner wall of the taper sleeve can bear two acting forces of tension and compression, and meanwhile, the modular construction method has the characteristics of self-locking performance and good sealing performance, the connecting end of the steel reinforcement is processed into the taper thread, the steel reinforcement of the steel reinforcement cage and the reserved wall steel reinforcement are connected into a whole according to a specified torque value, the steel reinforcement installation precision can be improved, and the one-time acceptance pass rate can reach 100%.

6. The modularized construction method for the U-shaped wall steel reinforcement cage, provided by the embodiment of the invention, has high standardization degree, can be used for industrial and mechanical construction, solves the problem of connection of large-diameter steel reinforcements of steel reinforcement cage modules, and can be applied to large-diameter steel reinforcement construction.

Drawings

In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a perspective view of a prefabricated positioning base structure provided by an embodiment of the present invention;

FIG. 2 is a partial block diagram of a prefabricated positioning base according to an embodiment of the present invention;

FIG. 3 is a top view of a prefabricated positioning base provided in accordance with an embodiment of the present invention;

FIG. 4 is a perspective view of a prefabricated framework structure provided by an embodiment of the present invention;

FIG. 5 is a plan view of a slotted positioning plate provided in an embodiment of the present invention;

fig. 6 is a perspective view of a U-shaped wall reinforcement cage module structure provided in the embodiment of the present invention;

FIG. 7 is a diagram of a hoisting tool provided in an embodiment of the present invention;

fig. 8 is a lifting diagram of a U-shaped wall reinforcement cage module according to an embodiment of the present invention;

fig. 9 is a connection structure diagram of the upper and lower steel bar taper sleeves according to the embodiment of the invention.

Reference numbers and corresponding part names in the drawings:

1-positioning steel sleeve, 2-channel steel frame, 3-vertical framework, 4-transverse framework, 5-lifting lug, 6-1 lifting lug, 6-2-lifting lug, 7-positioning notch, 8-prefabricated positioning base, 9-prefabricated framework, 10-slotted positioning plate, 11-vertical steel bar, 12-reserved vertical steel bar, 13-taper sleeve and 14-lifting tool.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and the accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limiting the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures have not been described in detail in order to avoid obscuring the present invention.

Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the invention.

Example 1

As shown in fig. 1 to 9, in an embodiment of the present invention, a U-shaped wall reinforcement cage modular construction method is provided,

the method comprises the following steps:

1) Binding the vertical steel bars and the transverse steel bars on a prefabricating tool to form a U-shaped wall body steel reinforcement cage;

2) Hoisting the U-shaped wall body reinforcement cage to the site reserved reinforcement by using a hoisting tool 14;

3) And connecting the vertical steel bars at the bottom of the U-shaped wall steel reinforcement cage with the on-site reserved steel bars through taper sleeves 13.

The prefabricating tool comprises a prefabricating positioning base 8, a prefabricating framework 9 and a slotting positioning plate 10.

The prefabricated positioning base is composed of a positioning steel sleeve 1 and a channel steel frame 2, the channel steel frame 2 adopts a Q235B 10 channel steel, the channel steel frame 2 is reversely buckled on the flat ground, and the space and the relative position of vertical steel bars are welded according to a wall steel bar design drawing

The diameter of the positioning steel sleeve is slightly larger than the diameter of the vertical steel bar, the height of the positioning steel sleeve is 50mm, and the error is +/-5 mm.

In a wall reinforcing steel bar design drawing, two types of reinforcing steel bar joint connection modes are generally adopted, namely 100% and 50% of reinforcing steel bar joint connection, generally speaking, the wall is high and concrete can not be poured after one-time construction, so the wall is divided into different layer heights for construction according to the height of the wall, the embodiment takes a nuclear power engineering 'Hualong I' pile type, the construction of a reactor plant steam generator partition wall is taken as an example, the height of the wall is 13.93m and is divided into two layers of construction of 5.03m and 8.90m, the reinforcing steel bar connection at the end part of an opening of the wall adopts 100%, and the rest adopts 50%, so for the condition, the percentage requirements of upper and lower reinforcing steel bar joint layers need to be considered for the structure of the prefabricated positioning base. For example: 4 rows of steel bars are distributed on one wall, the two rows of steel bars on the outer side are high, the two rows of steel bars in the middle of the inner side are low according to design drawings, namely 50% of steel bar joints are connected, and at the moment, the channel steel frame of the prefabricated positioning base has a double-layer structure so as to meet the height requirements of the bottoms of the steel bars in different rows inside and outside; if the heights of the 4 rows of steel bars are the same, the connection of the steel bar joints is 100 percent. By analogy with the connection percentage of other steel bar joints, the prefabricated positioning base is processed according to the requirements of steel bar connection design drawings.

The prefabricated framework comprises a vertical framework 3, a horizontal framework 4, a lifting lug 5 and a lifting lug 6, wherein the vertical framework 3 is connected with the horizontal framework 4 in a welding mode, and the verticality and the flatness deviation are controlled to be +/-3 mm/m. The vertical frameworks are connected through the transverse frameworks, and the integrity is improved. The vertical framework adopts 10 # I-steel, and the transverse framework and the ear-picking adopt 10 # channel steel. The arrangement interval of the prefabricated frameworks is determined according to the intervals of vertical steel bars and transverse steel bars of a wall body, the wall thickness is usually 600-800 mm, the interval of 4 rows of steel bars is 150-200 mm, the intervals of the vertical frameworks and the transverse frameworks are arranged according to 800-1000 mm, and the rigidity and the stability of the whole structure of the steel reinforcement cage module can be ensured through practice determination. The ear is chosen in every equidistant welding on the vertical skeleton, and ear 5 is chosen on same layer welding on vertical skeleton 3 on same level line, chooses ear 5 length to set up according to horizontal reinforcing bar interval length for supplementary fixed vertical reinforcing bar, horizontal reinforcing bar. And a lifting lug 6-1 is welded at the top of the vertical framework 3 and used for integrally hoisting the prefabricated reinforcement cage module in the later period.

The fluting locating plate adopts 14mm steel sheet processing, sets up location notch 7 according to the installation reinforcing bar interval, and the width of notch is directly slightly big than the reinforcing bar. The two slotted positioning plates are connected by adopting a dropping strip, so that the positions of the positioning notches 7 on the two sides are ensured to be on the same straight line.

The purpose of arranging the slotted positioning plate is as follows:

(1) Before the floor slab steel bars are poured, the slotting positioning plates 10 can be embedded at the reserved joint bars of the wall body, the joint bars are inserted into the positioning notches 7, after the concrete is poured, the large deviation of the space and the verticality of the joint bars of the wall body can be avoided, and the accurate positioning effect is achieved for the connection of the joint bars reserved for the wall body and the steel bars at the lower part of the wall body in the later period;

(2) When the wall body is high, need divide 2 layers and above when the construction, treat that the prefabrication of first floor wall body steel reinforcement cage finishes, install fluting locating plate 10 at the top, block wall body top vertical reinforcement in location notch 7, fluting locating plate 10 welding is on prefabricated skeleton 9, improve the wholeness of wall body steel reinforcement cage module, when the reservation wall body inserted bar on wall body steel reinforcement cage hoist butt joint floor, demolish prefabricated positioning base 8, spill wall body steel reinforcement cage bottom reinforcing bar, after finishing pouring wall body concrete with the wall body inserted bar connection of floor reservation, the fluting locating plate 10 at first floor wall body steel reinforcement cage top this moment, will be as the positioning and strengthening device when next floor wall body steel reinforcement cage bottom reinforcing bar butt joint, so relapse, until the wall body construction finishes.

The hoisting tool 14 for the U-shaped wall reinforcement cage is of a square frame structure formed by welding H300 multiplied by 10 multiplied by 15 sectional materials, 8 hoisting lifting lugs 6-2 are arranged at the upper part and distributed on two parallel sides, 13 connecting lifting lugs are arranged at the lower part, and the positions of the connecting lifting lugs and the positions of the lifting lugs are in one-to-one correspondence; this hoist and mount frock passes through the lug and links to each other with U type wall body steel reinforcement cage, realizes eccentric member hoist and mount.

Example 2

The embodiment of the invention provides a modularized construction method of a U-shaped wall reinforcement cage, which comprises the following steps:

(1) Flatly placing a prefabricated positioning base 8, and ensuring that the position of a positioning steel sleeve 1 on the prefabricated positioning base 8 corresponds to the on-site reserved steel bar;

(2) Placing the prefabricated framework 9 on the prefabricated positioning base 8, and welding the edges of the vertical framework 3 and the prefabricated positioning base 8 to form a whole;

(3) The slotting positioning plate 10 is placed at the precast elevation part of the wall body of the prefabricated framework 9, the positioning notch 7 is ensured to correspond to the positioning steel sleeve 1 and is vertical up and down, and the slotting positioning plate 10 is welded and connected with the prefabricated framework 9;

(4) Firstly, inserting the bottom of a vertical steel bar into a positioning steel sleeve 1 in a prefabricated positioning base 8, and clamping the top of the vertical steel bar in a positioning notch 7 of a slotted positioning plate to ensure that the steel bar is in a vertical state;

(5) Sequentially binding transverse steel bars, firmly binding the crossed parts of the vertical steel bars and the transverse steel bars by adopting binding wires, and firmly binding the vertical steel bars and the transverse steel bars with the vertical framework 3, the transverse framework 4 and the lifting lugs 5 by adopting the binding wires to form a U-shaped wall body steel reinforcement cage whole body;

(6) After prefabrication of the wall body steel reinforcement cage module is finished, connecting lifting lugs in a hoisting tool 14 with lifting lugs 6-1 in a prefabricated framework 9 through steel wire ropes, and then connecting the hoisting tool to a lifting hook of hoisting machinery through the hoisting lifting lugs 6-2 and the steel wire ropes for hoisting;

(7) And the vertical steel bars 11 at the lower part of the U-shaped wall steel reinforcement cage are connected with the reserved vertical steel bars 12 in the concrete through taper sleeves 13, and after the connection is finished, a formwork is erected to pour the concrete, so that the wall construction is completed.

Example 3

In the embodiment, the construction method is adopted to construct a reactor plant of a Hualongyi nuclear power unit and a 16.5 m-layer steam generator partition wall. The wall height 13.93m, the wall thickness 600mm, vertical reinforcing bar specification and interval: d32@200 (double-layer), horizontal reinforcing bar specification and interval: d40@200+ D25@200 (double layer), reinforcement weight 127t.

The traditional on-site reinforcement binding mode is adopted, the wall body needs to be divided into three layers according to the height of 4.64m for sequential construction, and manual binding construction is adopted until concrete pouring consumes 35 days in total.

By adopting the prefabricated tool for the U-shaped wall reinforcement cage module, the wall body is divided into two layers of 5.03 and 8.90m for prefabrication, the prefabricated reinforcement cage can be finished in a workshop in advance, the actual reinforcement binding and embedded part installation time is not counted in the field construction time, and only the hoisting time and the field joint connection time are considered in the field actual consumption; with the elevation, carry out horizontal contrast with the position, the steel reinforcement cage hoist and mount consume 10 days to concrete placement, compare traditional on-spot reinforcement mode, the time limit for a project practices thrift 26 days, and the work efficiency promotes about 72%.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A U-shaped wall body reinforcement cage modularization construction method is characterized by comprising the following steps:

1) Binding the vertical steel bars and the transverse steel bars on a prefabricating tool to form a U-shaped wall body steel reinforcement cage;

2) Hoisting the U-shaped wall reinforcement cage to the site reserved reinforcement by using a hoisting tool (14);

3) Connecting the vertical steel bars at the bottom of the U-shaped wall steel reinforcement cage with the on-site reserved steel bars through taper sleeves (13);

the prefabricating tool comprises a prefabricating positioning base (8) and a steel reinforcement framework (9); the prefabricated positioning base (8) comprises a U-shaped groove steel frame (2) which is horizontally arranged, a plurality of positioning steel sleeves (1) which are used for inserting and fixing the lower ends of the vertical steel bars are arranged on the groove steel frame (2), and the distribution positions of the positioning steel sleeves (1) are matched with the distribution positions of the vertical steel bars in the wall steel bar design structure;

the steel bar framework (9) comprises a vertical framework (3) and a transverse framework (4); the vertical frameworks (3) are sequentially and vertically arranged on the prefabricated positioning base (8) along the U-shaped structures; the transverse frameworks (4) are sequentially and vertically arranged on the vertical framework (3) along the vertical direction.

2. The modular construction method of the U-shaped wall reinforcement cage according to claim 1, characterized in that lifting lugs (6-1) are installed at the upper end of the vertical framework (3), connecting lifting lugs corresponding to the lifting lugs at the top of the vertical framework are also arranged on the bottom surface of the hoisting tool (14), and the lifting lugs (6-1) are connected with the connecting lifting lugs through steel wire ropes.

3. The modular construction method of the U-shaped wall reinforcement cage according to claim 1, characterized by further comprising a slotting positioning plate (10) arranged at a pre-cast elevation of the wall body of the prefabricated framework (9), wherein positioning notches (7) for fixing the upper ends of the vertical reinforcements are sequentially formed in the side surface of the slotting positioning plate (10) along the length direction, and the positioning notches (7) are located right above the positioning steel sleeve (1) and correspond to one another.

4. The modular construction method of the U-shaped wall reinforcement cage according to claim 1, characterized in that a plurality of picking lugs (5) are vertically arranged on the vertical framework (3) along the height direction in sequence, and the picking lugs (5) are also vertical to the transverse framework (4).

5. The modular construction method for the U-shaped wall reinforcement cage according to claim 3, characterized in that the number of the slotted positioning plates (10) is two, and the two slotted positioning plates (10) are respectively arranged on two sides of the prefabricated framework (9).

6. The modular construction method of the U-shaped wall steel reinforcement cage according to claim 5, characterized in that the two slotted positioning plates (10) are connected by lacing bars.

7. The modular construction method of the U-shaped wall reinforcement cage according to claim 1, characterized in that the length of the positioning steel sleeve (1) is 45-55 mm.

8. The modular construction method of the U-shaped wall reinforcement cage according to claim 1, characterized in that the prefabricated positioning base (8) is made of channel steel No. Q235B 10.

9. The modular construction method of the U-shaped wall reinforcement cage according to claim 4, characterized in that the vertical framework (3) is made of I-steel, and the transverse framework (4) and the lifting lugs (5) are made of channel steel.

10. The modular construction method of the U-shaped wall reinforcement cage according to claim 3, characterized in that the slotted positioning plate (10) is made of 15-16 mm steel plates.

Images